/*
 * Copyright (c) 2019 The StreamX Project
 * <p>
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.streamxhub.streamx.plugin.profiling.util;

import java.util.concurrent.atomic.AtomicLong;

/** @author benjobs */
public class Histogram {

  private AtomicLong count = new AtomicLong(0);
  private AtomicLong sum = new AtomicLong(0);
  private AtomicLong min = new AtomicLong(Long.MAX_VALUE);
  private AtomicLong max = new AtomicLong(Long.MIN_VALUE);

  public void appendValue(long value) {
    count.incrementAndGet();
    sum.addAndGet(value);

    min.updateAndGet(x -> value < x ? value : x);
    max.updateAndGet(x -> value > x ? value : x);
  }

  public long getCount() {
    return count.get();
  }

  public long getSum() {
    return sum.get();
  }

  public long getMin() {
    return min.get();
  }

  public long getMax() {
    return max.get();
  }
}
